The Subaru Deep Field project: Lyman α emitters at a redshift of 6.6

Yoshiaki Taniguchi; Masaru Ajiki; Tohru Nagao; Yasuhiro Shioya; Takashi Murayama; Nobunari Kashikawa; Keiichi Kodaira; Norio Kaifu; Hiroyasu Ando; Hiroshi Karoji; Masayuki Akiyama; Kentaro Aoki; Mamoru Doi; Shinobu S. Fujita; Hisanori Furusawa; Tomoki Hayashino; Fumihide Iwamuro; Masanori Iye; Naoto Kobayashi; Tadayuki Kodama; Yutaka Komiyama; Yuichi Matsuda; Satoshi Miyazaki; Yoshihiko Mizumoto; Tomoki Morokuma; Kentaro Motohara; Kyoji Nariai; Koji Ohta; Youichi Ohyama; Sadanori Okamura; Masami Ouchi; Toshiyuki Sasaki; Yasunori Sato; Kazuhiro Sekiguchi; Kazuhiro Shimasaku; Hajime Tamura; Masayuki Umemura; Toru Yamada; Naoki Yasuda; Michitoshi Yoshida

doi:10.1093/pasj/57.1.165

The Subaru Deep Field project: Lyman α emitters at a redshift of 6.6

Yoshiaki Taniguchi, Masaru Ajiki, Tohru Nagao, Yasuhiro Shioya, Takashi Murayama, Nobunari Kashikawa, Keiichi Kodaira, Norio Kaifu, Hiroyasu Ando, Hiroshi Karoji, Masayuki Akiyama, Kentaro Aoki, Mamoru Doi, Shinobu S. Fujita, Hisanori Furusawa, Tomoki Hayashino, Fumihide Iwamuro, Masanori Iye, Naoto Kobayashi, Tadayuki KodamaYutaka Komiyama, Yuichi Matsuda, Satoshi Miyazaki, Yoshihiko Mizumoto, Tomoki Morokuma, Kentaro Motohara, Kyoji Nariai, Koji Ohta, Youichi Ohyama, Sadanori Okamura, Masami Ouchi, Toshiyuki Sasaki, Yasunori Sato, Kazuhiro Sekiguchi, Kazuhiro Shimasaku, Hajime Tamura, Masayuki Umemura, Toru Yamada, Naoki Yasuda, Michitoshi Yoshida

SCI - Astronomy

Research output: Contribution to journal › Article › peer-review

222 Citations (Scopus)

Abstract

We present new results of a deep optical imaging survey using a narrow band filter (NB921) centered at λ = 9196 Å together with B, V, R, i′, and z′ broadband filters in the sky area of the Subaru Deep Field, which has been promoted as one of legacy programs of the 8.2m Subaru Telescope. We obtained a photometric sample of 58 Ly α emitter candidates at z ≈ 6.5-6.6 among ∼ 180 strong NB921-excess (z′ - NB921 > 1.0) objects together with a color criterion of i′ - z′ > 1.3. We then obtained optical spectra of 20 objects in our NB921-excess sample, and identified at least nine Ly α emitters at z ∼ 6.5-6.6, including the two emitters reported by Kodaira et al. (2003, PASJ, 55, L17). Since our Ly α-emitter candidates are free from strong amplification of gravitational lensing, we are able to discuss their observational properties from a statistical point of view. Based on these new results, we obtained a lower limit of the star-formation rate density of ρ_SFR ≃ 5.7 × 10^-4 h_0.7 M⊙ yr^-1 Mpc^-3 at z ≈ 6.6, being consistent with our previous estimate. We discuss the nature of star-formation activity in galaxies beyond z = 6.

Original language	English
Pages (from-to)	165-182
Number of pages	18
Journal	Publication of the Astronomical Society of Japan
Volume	57
Issue number	1
DOIs	https://doi.org/10.1093/pasj/57.1.165
Publication status	Published - 2005

Keywords

Cosmology: observations
Early universe
Galaxies: evolution
Galaxies: formation
Galaxies: starburst

Access to Document

10.1093/pasj/57.1.165

Cite this

Taniguchi, Y., Ajiki, M., Nagao, T., Shioya, Y., Murayama, T., Kashikawa, N., Kodaira, K., Kaifu, N., Ando, H., Karoji, H., Akiyama, M., Aoki, K., Doi, M., Fujita, S. S., Furusawa, H., Hayashino, T., Iwamuro, F., Iye, M., Kobayashi, N., ... Yoshida, M. (2005). The Subaru Deep Field project: Lyman α emitters at a redshift of 6.6. Publication of the Astronomical Society of Japan, 57(1), 165-182. https://doi.org/10.1093/pasj/57.1.165

@article{33bacfd3badd4a94b6fc31f43b3f5f6b,

title = "The Subaru Deep Field project: Lyman α emitters at a redshift of 6.6",

abstract = "We present new results of a deep optical imaging survey using a narrow band filter (NB921) centered at λ = 9196 {\AA} together with B, V, R, i′, and z′ broadband filters in the sky area of the Subaru Deep Field, which has been promoted as one of legacy programs of the 8.2m Subaru Telescope. We obtained a photometric sample of 58 Ly α emitter candidates at z ≈ 6.5-6.6 among ∼ 180 strong NB921-excess (z′ - NB921 > 1.0) objects together with a color criterion of i′ - z′ > 1.3. We then obtained optical spectra of 20 objects in our NB921-excess sample, and identified at least nine Ly α emitters at z ∼ 6.5-6.6, including the two emitters reported by Kodaira et al. (2003, PASJ, 55, L17). Since our Ly α-emitter candidates are free from strong amplification of gravitational lensing, we are able to discuss their observational properties from a statistical point of view. Based on these new results, we obtained a lower limit of the star-formation rate density of ρSFR ≃ 5.7 × 10-4 h0.7 M⊙ yr-1 Mpc-3 at z ≈ 6.6, being consistent with our previous estimate. We discuss the nature of star-formation activity in galaxies beyond z = 6.",

keywords = "Cosmology: observations, Early universe, Galaxies: evolution, Galaxies: formation, Galaxies: starburst",

author = "Yoshiaki Taniguchi and Masaru Ajiki and Tohru Nagao and Yasuhiro Shioya and Takashi Murayama and Nobunari Kashikawa and Keiichi Kodaira and Norio Kaifu and Hiroyasu Ando and Hiroshi Karoji and Masayuki Akiyama and Kentaro Aoki and Mamoru Doi and Fujita, {Shinobu S.} and Hisanori Furusawa and Tomoki Hayashino and Fumihide Iwamuro and Masanori Iye and Naoto Kobayashi and Tadayuki Kodama and Yutaka Komiyama and Yuichi Matsuda and Satoshi Miyazaki and Yoshihiko Mizumoto and Tomoki Morokuma and Kentaro Motohara and Kyoji Nariai and Koji Ohta and Youichi Ohyama and Sadanori Okamura and Masami Ouchi and Toshiyuki Sasaki and Yasunori Sato and Kazuhiro Sekiguchi and Kazuhiro Shimasaku and Hajime Tamura and Masayuki Umemura and Toru Yamada and Naoki Yasuda and Michitoshi Yoshida",

year = "2005",

doi = "10.1093/pasj/57.1.165",

language = "English",

volume = "57",

pages = "165--182",

journal = "Publication of the Astronomical Society of Japan",

issn = "0004-6264",

publisher = "Oxford University Press",

number = "1",

}

Taniguchi, Y, Ajiki, M, Nagao, T, Shioya, Y, Murayama, T, Kashikawa, N, Kodaira, K, Kaifu, N, Ando, H, Karoji, H, Akiyama, M, Aoki, K, Doi, M, Fujita, SS, Furusawa, H, Hayashino, T, Iwamuro, F, Iye, M, Kobayashi, N, Kodama, T, Komiyama, Y, Matsuda, Y, Miyazaki, S, Mizumoto, Y, Morokuma, T, Motohara, K, Nariai, K, Ohta, K, Ohyama, Y, Okamura, S, Ouchi, M, Sasaki, T, Sato, Y, Sekiguchi, K, Shimasaku, K, Tamura, H, Umemura, M, Yamada, T, Yasuda, N & Yoshida, M 2005, 'The Subaru Deep Field project: Lyman α emitters at a redshift of 6.6', Publication of the Astronomical Society of Japan, vol. 57, no. 1, pp. 165-182. https://doi.org/10.1093/pasj/57.1.165

TY - JOUR

T1 - The Subaru Deep Field project

T2 - Lyman α emitters at a redshift of 6.6

AU - Taniguchi, Yoshiaki

AU - Ajiki, Masaru

AU - Nagao, Tohru

AU - Shioya, Yasuhiro

AU - Murayama, Takashi

AU - Kashikawa, Nobunari

AU - Kodaira, Keiichi

AU - Kaifu, Norio

AU - Ando, Hiroyasu

AU - Karoji, Hiroshi

AU - Akiyama, Masayuki

AU - Aoki, Kentaro

AU - Doi, Mamoru

AU - Fujita, Shinobu S.

AU - Furusawa, Hisanori

AU - Hayashino, Tomoki

AU - Iwamuro, Fumihide

AU - Iye, Masanori

AU - Kobayashi, Naoto

AU - Kodama, Tadayuki

AU - Komiyama, Yutaka

AU - Matsuda, Yuichi

AU - Miyazaki, Satoshi

AU - Mizumoto, Yoshihiko

AU - Morokuma, Tomoki

AU - Motohara, Kentaro

AU - Nariai, Kyoji

AU - Ohta, Koji

AU - Ohyama, Youichi

AU - Okamura, Sadanori

AU - Ouchi, Masami

AU - Sasaki, Toshiyuki

AU - Sato, Yasunori

AU - Sekiguchi, Kazuhiro

AU - Shimasaku, Kazuhiro

AU - Tamura, Hajime

AU - Umemura, Masayuki

AU - Yamada, Toru

AU - Yasuda, Naoki

AU - Yoshida, Michitoshi

PY - 2005

Y1 - 2005

N2 - We present new results of a deep optical imaging survey using a narrow band filter (NB921) centered at λ = 9196 Å together with B, V, R, i′, and z′ broadband filters in the sky area of the Subaru Deep Field, which has been promoted as one of legacy programs of the 8.2m Subaru Telescope. We obtained a photometric sample of 58 Ly α emitter candidates at z ≈ 6.5-6.6 among ∼ 180 strong NB921-excess (z′ - NB921 > 1.0) objects together with a color criterion of i′ - z′ > 1.3. We then obtained optical spectra of 20 objects in our NB921-excess sample, and identified at least nine Ly α emitters at z ∼ 6.5-6.6, including the two emitters reported by Kodaira et al. (2003, PASJ, 55, L17). Since our Ly α-emitter candidates are free from strong amplification of gravitational lensing, we are able to discuss their observational properties from a statistical point of view. Based on these new results, we obtained a lower limit of the star-formation rate density of ρSFR ≃ 5.7 × 10-4 h0.7 M⊙ yr-1 Mpc-3 at z ≈ 6.6, being consistent with our previous estimate. We discuss the nature of star-formation activity in galaxies beyond z = 6.

AB - We present new results of a deep optical imaging survey using a narrow band filter (NB921) centered at λ = 9196 Å together with B, V, R, i′, and z′ broadband filters in the sky area of the Subaru Deep Field, which has been promoted as one of legacy programs of the 8.2m Subaru Telescope. We obtained a photometric sample of 58 Ly α emitter candidates at z ≈ 6.5-6.6 among ∼ 180 strong NB921-excess (z′ - NB921 > 1.0) objects together with a color criterion of i′ - z′ > 1.3. We then obtained optical spectra of 20 objects in our NB921-excess sample, and identified at least nine Ly α emitters at z ∼ 6.5-6.6, including the two emitters reported by Kodaira et al. (2003, PASJ, 55, L17). Since our Ly α-emitter candidates are free from strong amplification of gravitational lensing, we are able to discuss their observational properties from a statistical point of view. Based on these new results, we obtained a lower limit of the star-formation rate density of ρSFR ≃ 5.7 × 10-4 h0.7 M⊙ yr-1 Mpc-3 at z ≈ 6.6, being consistent with our previous estimate. We discuss the nature of star-formation activity in galaxies beyond z = 6.

KW - Cosmology: observations

KW - Early universe

KW - Galaxies: evolution

KW - Galaxies: formation

KW - Galaxies: starburst

UR - http://www.scopus.com/inward/record.url?scp=15744394804&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=15744394804&partnerID=8YFLogxK

U2 - 10.1093/pasj/57.1.165

DO - 10.1093/pasj/57.1.165

M3 - Article

AN - SCOPUS:15744394804

SN - 0004-6264

VL - 57

SP - 165

EP - 182

JO - Publication of the Astronomical Society of Japan

JF - Publication of the Astronomical Society of Japan

IS - 1

ER -

The Subaru Deep Field project: Lyman α emitters at a redshift of 6.6

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this